Help!! Convert polar coordinate (-2,5pi/6) to rectangular form. Please help! Medal will be given!!!

Question

mathstudent55 · Answer

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mathstudent55 · Answer

$x = r \cos \theta $
$y = r \sin \theta $

anonymous · Answer

But how would you solve that? like im confused how to set it up

mathstudent55 · Answer

In your case, r = -2
$\theta = 150^o$

mathstudent55 · Answer

Just plug in r and theta in each equation and find x and y.

BTW, I converted $ \dfrac{5 \pi}{6} $ to $ 150^o$.
You can use either unit of radians or degrees.

anonymous · Answer

So it would  be (1.73, -1)?? using degrees.. And How did you convert 5pi/6?

mathstudent55 · Answer

You are correct.

mathstudent55 · Answer

To convert from radians to degrees, I'll give you a formula soon, but first I'll explain it to you so you'll be able to remember it.

mathstudent55 · Answer

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mathstudent55 · Answer

Here is the famous unit circle.
It has a radius of 1, hence the name "unit" circle.

mathstudent55 · Answer

The angle unit "radian" is the angle measure necessary to correspond to a section of the circle the same length as the radius of the circle.

mathstudent55 · Answer

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